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6

ELECTRICAL CONNECTIONS

Power Source

A separate electrical circuit should be used for your tool. This circuit should not be less than #12
wire and should be protected with a 20 amp fuse. Before connecting the motor to the power line,
make sure the switch is in the “OFF” position and be sure the electric current is of the same charac-
teristics as indicated on the tool. All line connections should make good contact. Running on low
voltage will damage the motor.

WARNING: THIS TOOL MUST BE GROUNDED WHILE IN USE TO PROTECT THE
OPERATOR FROM ELECTRIC SHOCK.

Grounding Instructions

WARNING: DO NOT EXPOSE THE TOOL TO RAIN OR OPERATE IN DAMP LOCATIONS.

All grounded, cord-connected tools:

In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric
shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a
grounding plug. The plug must be plugged into a matching outlet that is properly installed and
grounded in accordance with all local codes and ordinances. Do not modify the plug provided - if it
will not fit the outlet, have the proper outlet installed by a qualified electrician.
Improper connection of the equipment-grounding conductor can result in risk of electric shock.  The
conductor with insulation having an outer surface that is green with or without yellow stripes is the
equipment-grounding conductor. If repair or replacement of the electric cord or plug is necessary, do
not connect the equipment grounding conductor to a live terminal. Check with a qualified electrician
or service personnel if the grounding instructions are not completely understood, or if in doubt as to
whether the tool is properly grounded.

Figure 2

Grounded, cord-connected tools intended for
use on a supply circuit having a nominal rating
less than 150 volts will have a grounding plug
similar to illustration.

WARNING: 

IN ALL CASES, MAKE SURE THE RECEPTACLE IN QUESTION IS PROPERLY GROUNDED.

Fig. 2

Extension Cords

Figure 1

Make sure your extension cord is in good condition and
is a 3-wire extension cord which has a 3-prong grounding
type plug and matching receptacle which will accept the
tool’s plug. When using an extension cord, be sure to
use one heavy enough to carry the current of the tool.
An undersized cord will cause a drop in line voltage,
resulting in loss of power and overheating. Extension
cords should be no longer than 50 ft.

Fig. 1

Summary of Contents for 20-142C

Page 1: ...MACHINERY visit our website at www deltamachinery com For Parts Service Warranty or other Assistance please call 1 800 463 3582 I NSTRUCTION MANUAL Part No 1236490 Copyright 2002 Delta Machinery Dated 11 10 02 14 Abrasive Cut Off Saw Model 20 142C ...

Page 2: ...2 ...

Page 3: ...ons 6 UNPACKING MACHINE 7 Moving Cutting Head To The Up Position 7 OPERATING CONTROL AND ADJUSTMENTS Starting And Stopping Saw 8 Vise 8 Angle Cutting 8 Adjusting Downward Travel Of Abrasive Wheel 9 Carrying Handle 9 Cutting Operation 10 ACCESSORIES PARTS SERVICE AND WARRANTY 12 MAINTENANCE Changing The Abrasive Wheel 11 ...

Page 4: ...and clean for best and safest performance Follow instructions for lubricating and changing accessories 15 Disconnect tools before servicing and when changing accessories such as blades bits cutters etc 16 Use recommended accessories The use of accessories and attachments not recommended by Delta may cause hazards or risk of injury to persons WARNING FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERI...

Page 5: ... 17 Make sure abrasive wheel is not contacting workpiece before switch is turned on 18 Allow the motor to come up to full speed before starting cut 19 After turning machine on lower wheel slightly until it comes in contact with the workpiece and then draw wheel firmly through the cut Do not allow the wheel to chatter and jump as this may cause the wheel to wear out of round resulting in poor cutti...

Page 6: ...e proper outlet installed by a qualified electrician Improper connection of the equipment grounding conductor can result in risk of electric shock The conductor with insulation having an outer surface that is green with or without yellow stripes is the equipment grounding conductor If repair or replacement of the electric cord or plug is necessary do not connect the equipment grounding conductor t...

Page 7: ...w and all loose items from the shipping con tainer Figure 4 For shipping purposes the cutting head A has been clamped in the Down position against a foam packing block by means of the holddown chain B Figure 5 To move the cutting head A to the Up position simply unhook the chain B from the handle housing Fig 3 Fig 4 Fig 5 UNPACKING MACHINE ...

Page 8: ...y from rear vise clamp C to accomodate workpiece Figure 8 Slide in screw A until front vise clamp B contacts workpiece Flip half nut C over to engage screw A Tighten screw handle D to securely clamp workpiece in the vise Figure 9 Using supplied wrench loosen two screws A and rotate rear vise clamp B to the desired angle Tighten the two screws The front vise clamp C pivots on its post and will self...

Page 9: ...ng lock nut B and turning stop screw in or out as needed Then tighten lock nut Figure 12 This view illustrates the stop plate A contact ing stop screw B NOTE As the diameter of the abrasive wheel decreases due to wear the downward travel can be increased Figure 13 A carrying handle A is provided for ease of transportation When transporting the machine the cutting head should be locked in the down ...

Page 10: ...to chatter and jump as this can cause the wheel to wear out of round resulting in poor quality of cut and possi bly broken wheels Figure 16 Do not slow up when coming through the bottom of the cut This keeps the metal from overheating and dragging off in a heavy burr Figure 17 This view shows a finished cut off operation NOTE The number of cuts per wheel as well as the quality of cut will vary wit...

Page 11: ...wheel flange Clean the inside surfaces of both the inside and outside wheel flanges Install new wheel and replace outside wheel flange washer and arbor screw Tighten arbor screw clockwise IMPORTANT Use only reinforced abrasive wheels with blotters and tighten arbor screw only enough to hold wheel firmly and prevent slippage Excessive tightening may result in damage Rotate front wheel guard to down...

Page 12: ...his warranty is Delta s sole warranty and sets forth the customer s exclusive remedy with respect to defective products all other warranties express or implied whether of merchantability fitness for purpose or otherwise are expressly disclaimed by Delta PARTS SERVICE AND WARRANTY ASSISTANCE All Delta Machines and accessories are manufactured to high quality standards and are serviced by a network ...

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